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[PATCH AUTOSEL 4.14 20/24] selftests/timers: Add missing fflush(stdout) calls

by Sasha Levin

From: Kees Cook <keescook(a)chromium.org> [ Upstream commit fe48319243a626c860fd666ca032daacc2ba84a5 ] When running under a pipe, some timer tests would not report output in real-time because stdout flushes were missing after printf()s that lacked a newline. This adds them to restore real-time status output that humans can enjoy. Signed-off-by: Kees Cook <keescook(a)chromium.org> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/timers/adjtick.c | 1 + tools/testing/selftests/timers/leapcrash.c | 1 + tools/testing/selftests/timers/mqueue-lat.c | 1 + tools/testing/selftests/timers/nanosleep.c | 1 + tools/testing/selftests/timers/nsleep-lat.c | 1 + tools/testing/selftests/timers/raw_skew.c | 1 + tools/testing/selftests/timers/set-tai.c | 1 + tools/testing/selftests/timers/set-tz.c | 2 ++ tools/testing/selftests/timers/threadtest.c | 1 + tools/testing/selftests/timers/valid-adjtimex.c | 2 ++ 10 files changed, 12 insertions(+) diff --git a/tools/testing/selftests/timers/adjtick.c b/tools/testing/selftests/timers/adjtick.c index 0caca3a06bd2..54d8d87f36b3 100644 --- a/tools/testing/selftests/timers/adjtick.c +++ b/tools/testing/selftests/timers/adjtick.c @@ -136,6 +136,7 @@ int check_tick_adj(long tickval) eppm = get_ppm_drift(); printf("%lld usec, %lld ppm", systick + (systick * eppm / MILLION), eppm); + fflush(stdout); tx1.modes = 0; adjtimex(&tx1); diff --git a/tools/testing/selftests/timers/leapcrash.c b/tools/testing/selftests/timers/leapcrash.c index 830c462f605d..dc80728ed191 100644 --- a/tools/testing/selftests/timers/leapcrash.c +++ b/tools/testing/selftests/timers/leapcrash.c @@ -101,6 +101,7 @@ int main(void) } clear_time_state(); printf("."); + fflush(stdout); } printf("[OK]\n"); return ksft_exit_pass(); diff --git a/tools/testing/selftests/timers/mqueue-lat.c b/tools/testing/selftests/timers/mqueue-lat.c index 1867db5d6f5e..7916cf5cc6ff 100644 --- a/tools/testing/selftests/timers/mqueue-lat.c +++ b/tools/testing/selftests/timers/mqueue-lat.c @@ -102,6 +102,7 @@ int main(int argc, char **argv) int ret; printf("Mqueue latency : "); + fflush(stdout); ret = mqueue_lat_test(); if (ret < 0) { diff --git a/tools/testing/selftests/timers/nanosleep.c b/tools/testing/selftests/timers/nanosleep.c index 8adb0bb51d4d..71b5441c2fd9 100644 --- a/tools/testing/selftests/timers/nanosleep.c +++ b/tools/testing/selftests/timers/nanosleep.c @@ -142,6 +142,7 @@ int main(int argc, char **argv) continue; printf("Nanosleep %-31s ", clockstring(clockid)); + fflush(stdout); length = 10; while (length <= (NSEC_PER_SEC * 10)) { diff --git a/tools/testing/selftests/timers/nsleep-lat.c b/tools/testing/selftests/timers/nsleep-lat.c index c3c3dc10db17..eb3e79ed7b4a 100644 --- a/tools/testing/selftests/timers/nsleep-lat.c +++ b/tools/testing/selftests/timers/nsleep-lat.c @@ -155,6 +155,7 @@ int main(int argc, char **argv) continue; printf("nsleep latency %-26s ", clockstring(clockid)); + fflush(stdout); length = 10; while (length <= (NSEC_PER_SEC * 10)) { diff --git a/tools/testing/selftests/timers/raw_skew.c b/tools/testing/selftests/timers/raw_skew.c index dcf73c5dab6e..b41d8dd0c40c 100644 --- a/tools/testing/selftests/timers/raw_skew.c +++ b/tools/testing/selftests/timers/raw_skew.c @@ -112,6 +112,7 @@ int main(int argv, char **argc) printf("WARNING: ADJ_OFFSET in progress, this will cause inaccurate results\n"); printf("Estimating clock drift: "); + fflush(stdout); sleep(120); get_monotonic_and_raw(&mon, &raw); diff --git a/tools/testing/selftests/timers/set-tai.c b/tools/testing/selftests/timers/set-tai.c index 70fed27d8fd3..8c4179ee2ca2 100644 --- a/tools/testing/selftests/timers/set-tai.c +++ b/tools/testing/selftests/timers/set-tai.c @@ -55,6 +55,7 @@ int main(int argc, char **argv) printf("tai offset started at %i\n", ret); printf("Checking tai offsets can be properly set: "); + fflush(stdout); for (i = 1; i <= 60; i++) { ret = set_tai(i); ret = get_tai(); diff --git a/tools/testing/selftests/timers/set-tz.c b/tools/testing/selftests/timers/set-tz.c index 877fd5532fee..62bd33eb16f0 100644 --- a/tools/testing/selftests/timers/set-tz.c +++ b/tools/testing/selftests/timers/set-tz.c @@ -65,6 +65,7 @@ int main(int argc, char **argv) printf("tz_minuteswest started at %i, dst at %i\n", min, dst); printf("Checking tz_minuteswest can be properly set: "); + fflush(stdout); for (i = -15*60; i < 15*60; i += 30) { ret = set_tz(i, dst); ret = get_tz_min(); @@ -76,6 +77,7 @@ int main(int argc, char **argv) printf("[OK]\n"); printf("Checking invalid tz_minuteswest values are caught: "); + fflush(stdout); if (!set_tz(-15*60-1, dst)) { printf("[FAILED] %i didn't return failure!\n", -15*60-1); diff --git a/tools/testing/selftests/timers/threadtest.c b/tools/testing/selftests/timers/threadtest.c index 759c9c06f1a0..cf3e48919874 100644 --- a/tools/testing/selftests/timers/threadtest.c +++ b/tools/testing/selftests/timers/threadtest.c @@ -163,6 +163,7 @@ int main(int argc, char **argv) strftime(buf, 255, "%a, %d %b %Y %T %z", localtime(&start)); printf("%s\n", buf); printf("Testing consistency with %i threads for %ld seconds: ", thread_count, runtime); + fflush(stdout); /* spawn */ for (i = 0; i < thread_count; i++) diff --git a/tools/testing/selftests/timers/valid-adjtimex.c b/tools/testing/selftests/timers/valid-adjtimex.c index d9d3ab93b31a..5397de708d3c 100644 --- a/tools/testing/selftests/timers/valid-adjtimex.c +++ b/tools/testing/selftests/timers/valid-adjtimex.c @@ -123,6 +123,7 @@ int validate_freq(void) /* Set the leap second insert flag */ printf("Testing ADJ_FREQ... "); + fflush(stdout); for (i = 0; i < NUM_FREQ_VALID; i++) { tx.modes = ADJ_FREQUENCY; tx.freq = valid_freq[i]; @@ -250,6 +251,7 @@ int set_bad_offset(long sec, long usec, int use_nano) int validate_set_offset(void) { printf("Testing ADJ_SETOFFSET... "); + fflush(stdout); /* Test valid values */ if (set_offset(NSEC_PER_SEC - 1, 1)) -- 2.20.1

6 years

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[PATCH AUTOSEL 4.19 26/36] selftests: fib_rule_tests: fix local IPv4 address typo

by Sasha Levin

From: Hangbin Liu <liuhangbin(a)gmail.com> [ Upstream commit fc82d93e57e3d41f79eff19031588b262fc3d0b6 ] The IPv4 testing address are all in 192.51.100.0 subnet. It doesn't make sense to set a 198.51.100.1 local address. Should be a typo. Fixes: 65b2b4939a64 ("selftests: net: initial fib rule tests") Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> Reviewed-by: David Ahern <dsahern(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/fib_rule_tests.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/fib_rule_tests.sh b/tools/testing/selftests/net/fib_rule_tests.sh index d84193bdc307..dbd90ca73e44 100755 --- a/tools/testing/selftests/net/fib_rule_tests.sh +++ b/tools/testing/selftests/net/fib_rule_tests.sh @@ -55,7 +55,7 @@ setup() $IP link add dummy0 type dummy $IP link set dev dummy0 up - $IP address add 198.51.100.1/24 dev dummy0 + $IP address add 192.51.100.1/24 dev dummy0 $IP -6 address add 2001:db8:1::1/64 dev dummy0 set +e -- 2.20.1

6 years

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[PATCH AUTOSEL 5.1 40/60] selftests: fib_rule_tests: fix local IPv4 address typo

by Sasha Levin

From: Hangbin Liu <liuhangbin(a)gmail.com> [ Upstream commit fc82d93e57e3d41f79eff19031588b262fc3d0b6 ] The IPv4 testing address are all in 192.51.100.0 subnet. It doesn't make sense to set a 198.51.100.1 local address. Should be a typo. Fixes: 65b2b4939a64 ("selftests: net: initial fib rule tests") Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com> Reviewed-by: David Ahern <dsahern(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/net/fib_rule_tests.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/fib_rule_tests.sh b/tools/testing/selftests/net/fib_rule_tests.sh index 4b7e107865bf..1ba069967fa2 100755 --- a/tools/testing/selftests/net/fib_rule_tests.sh +++ b/tools/testing/selftests/net/fib_rule_tests.sh @@ -55,7 +55,7 @@ setup() $IP link add dummy0 type dummy $IP link set dev dummy0 up - $IP address add 198.51.100.1/24 dev dummy0 + $IP address add 192.51.100.1/24 dev dummy0 $IP -6 address add 2001:db8:1::1/64 dev dummy0 set +e -- 2.20.1

6 years

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[PATCH AUTOSEL 5.1 27/60] selftests/bpf: fix bpf_get_current_task

by Sasha Levin

From: Alexei Starovoitov <ast(a)kernel.org> [ Upstream commit 7ed4b4e60bb1dd3df7a45dfbde3a96efce9df7eb ] Fix bpf_get_current_task() declaration. Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Acked-by: Andrii Nakryiko <andriin(a)fb.com> Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/bpf/bpf_helpers.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index c81fc350f7ad..a43a52cdd3f0 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -246,7 +246,7 @@ static int (*bpf_skb_change_type)(void *ctx, __u32 type) = (void *) BPF_FUNC_skb_change_type; static unsigned int (*bpf_get_hash_recalc)(void *ctx) = (void *) BPF_FUNC_get_hash_recalc; -static unsigned long long (*bpf_get_current_task)(void *ctx) = +static unsigned long long (*bpf_get_current_task)(void) = (void *) BPF_FUNC_get_current_task; static int (*bpf_skb_change_tail)(void *ctx, __u32 len, __u64 flags) = (void *) BPF_FUNC_skb_change_tail; -- 2.20.1

6 years

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[PATCH v1 0/9] KVM selftests for s390x

by Thomas Huth

This patch series enables the KVM selftests for s390x. As a first test, the sync_regs from x86 has been adapted to s390x, and after a fix for KVM_CAP_MAX_VCPU_ID on s390x, the kvm_create_max_vcpus is now enabled here, too. Please note that the ucall() interface is not used yet - since s390x neither has PIO nor MMIO, this needs some more work first before it becomes usable (we likely should use a DIAG hypercall here, which is what the sync_reg test is currently using, too... I started working on that topic, but did not finish that work yet, so I decided to not include it yet). RFC -> v1: - Rebase, needed to add the first patch for vcpu_nested_state_get/set - Added patch to introduce VM_MODE_DEFAULT macro - Improved/cleaned up the code in processor.c - Added patch to fix KVM_CAP_MAX_VCPU_ID on s390x - Added patch to enable the kvm_create_max_vcpus on s390x and aarch64 Andrew Jones (1): kvm: selftests: aarch64: fix default vm mode Thomas Huth (8): KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard KVM: selftests: Guard struct kvm_vcpu_events with __KVM_HAVE_VCPU_EVENTS KVM: selftests: Introduce a VM_MODE_DEFAULT macro for the default bits KVM: selftests: Align memory region addresses to 1M on s390x KVM: selftests: Add processor code for s390x KVM: selftests: Add the sync_regs test for s390x KVM: s390: Do not report unusabled IDs via KVM_CAP_MAX_VCPU_ID KVM: selftests: Move kvm_create_max_vcpus test to generic code MAINTAINERS | 2 + arch/mips/kvm/mips.c | 3 + arch/powerpc/kvm/powerpc.c | 3 + arch/s390/kvm/kvm-s390.c | 1 + arch/x86/kvm/x86.c | 3 + tools/testing/selftests/kvm/Makefile | 7 +- .../testing/selftests/kvm/include/kvm_util.h | 10 + .../selftests/kvm/include/s390x/processor.h | 22 ++ .../kvm/{x86_64 => }/kvm_create_max_vcpus.c | 3 +- .../selftests/kvm/lib/aarch64/processor.c | 2 +- tools/testing/selftests/kvm/lib/kvm_util.c | 25 +- .../selftests/kvm/lib/s390x/processor.c | 286 ++++++++++++++++++ .../selftests/kvm/lib/x86_64/processor.c | 2 +- .../selftests/kvm/s390x/sync_regs_test.c | 151 +++++++++ virt/kvm/arm/arm.c | 3 + virt/kvm/kvm_main.c | 2 - 16 files changed, 514 insertions(+), 11 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/s390x/processor.h rename tools/testing/selftests/kvm/{x86_64 => }/kvm_create_max_vcpus.c (93%) create mode 100644 tools/testing/selftests/kvm/lib/s390x/processor.c create mode 100644 tools/testing/selftests/kvm/s390x/sync_regs_test.c -- 2.21.0

6 years

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[PATCH] kbuild: teach kselftest-merge to find nested config files

by Dan Rue

Current implementation of kselftest-merge only finds config files that are one level deep using `$(srctree)/tools/testing/selftests/*/config`. Often, config files are added in nested directories, and do not get picked up by kselftest-merge. Use `find` to catch all config files under `$(srctree)/tools/testing/selftests` instead. Signed-off-by: Dan Rue <dan.rue(a)linaro.org> --- Makefile | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/Makefile b/Makefile index a45f84a7e811..e99e7f9484af 100644 --- a/Makefile +++ b/Makefile @@ -1228,9 +1228,8 @@ kselftest-clean: PHONY += kselftest-merge kselftest-merge: $(if $(wildcard $(objtree)/.config),, $(error No .config exists, config your kernel first!)) - $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ - -m $(objtree)/.config \ - $(srctree)/tools/testing/selftests/*/config + $(Q)find $(srctree)/tools/testing/selftests -name config | \ + xargs $(srctree)/scripts/kconfig/merge_config.sh -m $(objtree)/.config +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig # --------------------------------------------------------------------------- -- 2.21.0

6 years

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bpf: test_xdp_vlan.sh: Kernel panic: Unable to handle kernel paging request at virtual address 000080096d61a000

by Naresh Kamboju

Kernel panic while running bpf: test_xdp_vlan.sh test case on arm64 Juno hardware Linux version 5.2.0-rc3-next-20190604 bpf: test_xdp_vlan.sh # --- 100.64.41.2 ping statistics --- 100.64.41.2: ping_statistics # # 3 packets transmitted, 3 received, 0% packet loss, time 2049ms packets: transmitted,_3 # # rtt min/avg/max/mdev = 0.172/0.193/0.205/0.022 ms min/avg/max/mdev: =_0.172/0.193/0.205/0.022 # # PING 100.64.41.1 (100.64.41.1) 56(84) bytes of data. 100.64.41.1: (100.64.41.1)_56(84) # # 64 bytes from 100.64.41.1 icmp_seq=1 ttl=64 time=0.146 ms bytes: from_100.64.41.1 # # 64 bytes from 100.64.41.1 icmp_seq=2 ttl=64 time=0.182 ms bytes: from_100.64.41.1 # [ 492.263541] ip6_tunnel: gre6_dev xmit: Local address not yet configured! [ 788.768658] ip6_tunnel: gre6_dev xmit: Local address not yet configured! [ 940.373938] Unable to handle kernel paging request at virtual address 000080096d61a000 [ 940.381873] Mem abort info: [ 940.384717] ESR = 0x96000004 [ 940.387797] Exception class = DABT (current EL), IL = 32 bits [ 940.393715] SET = 0, FnV = 0 [ 940.396788] EA = 0, S1PTW = 0 [ 940.399949] Data abort info: [ 940.402805] ISV = 0, ISS = 0x00000004 [ 940.406647] CM = 0, WnR = 0 [ 940.409639] user pgtable: 4k pages, 48-bit VAs, pgdp=000000093bee0000 [ 940.416065] [000080096d61a000] pgd=0000000000000000 [ 940.421079] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 940.426598] Modules linked in: sit act_gact cls_flower cls_bpf sch_ingress xt_tcpudp iptable_filter ip_tables x_tables tun algif_hash af_alg tda998x drm_kms_helper drm crct10dif_ce drm_panel_orientation_quirks fuse [last unloaded: test_bpf] [ 940.447715] CPU: 2 PID: 8748 Comm: ping Not tainted 5.2.0-rc3-next-20190604 #1 [ 940.454865] Hardware name: ARM Juno development board (r2) (DT) [ 940.460727] pstate: 80000005 (Nzcv daif -PAN -UAO) [ 940.465480] pc : ip6_pol_route+0x1f4/0x738 [ 940.469537] lr : ip6_pol_route+0x1d8/0x738 [ 940.473590] sp : ffff000013fb3010 [ 940.476870] x29: ffff000013fb3010 x28: ffff000011be3000 [ 940.482132] x27: ffff80096f228a00 x26: ffff80096f364000 [ 940.487393] x25: ffff000010da3500 x24: 000000000000004e [ 940.492654] x23: ffff00001198e000 x22: ffff000013fb3240 [ 940.497915] x21: ffff00001195f000 x20: ffff80096bf95a00 [ 940.503175] x19: ffff000013fb3268 x18: 0000000000000000 [ 940.508435] x17: 0000000000000001 x16: 0000000000000000 [ 940.513696] x15: 0000000000000000 x14: 1312111000000000 [ 940.518956] x13: 0002ccaf00000000 x12: 5cf61adb01002c22 [ 940.524216] x11: 0000000000000002 x10: 0000000000000003 [ 940.529477] x9 : 0000000000000000 x8 : ffff00001195f848 [ 940.534738] x7 : ffff000013fb2ffb x6 : 0000000000000000 [ 940.539998] x5 : ffff80096f364000 x4 : 0000000000000001 [ 940.545258] x3 : 0000000000000004 x2 : 000080096d61a000 [ 940.550519] x1 : ffff80092e761700 x0 : 0000000000000000 [ 940.555780] Call trace: [ 940.558202] ip6_pol_route+0x1f4/0x738 [ 940.561914] ip6_pol_route_input+0x4c/0x60 [ 940.565971] fib6_rule_lookup+0xc8/0x170 [ 940.569855] ip6_route_input_lookup+0x70/0x88 [ 940.574169] ip6_route_input+0xe4/0x238 [ 940.577969] ip6_rcv_finish_core.isra.0+0x48/0x168 [ 940.582713] ip6_rcv_finish+0x68/0xc0 [ 940.586339] ipv6_rcv+0x70/0x228 [ 940.589536] __netif_receive_skb_one_core+0x68/0x90 [ 940.594366] __netif_receive_skb+0x28/0x80 [ 940.598422] process_backlog+0xe4/0x240 [ 940.602220] net_rx_action+0x120/0x4a8 [ 940.605933] __do_softirq+0x11c/0x580 [ 940.609559] do_softirq.part.3+0x94/0x98 [ 940.613442] __local_bh_enable_ip+0x12c/0x138 [ 940.617756] ip6_finish_output2+0x220/0xb98 [ 940.621898] __ip6_finish_output+0x1e8/0x2a8 [ 940.626126] ip6_finish_output+0x38/0xd0 [ 940.630010] ip6_output+0x80/0x350 [ 940.633378] bpf_lwt_xmit_reroute+0x2a8/0x4b0 [ 940.637692] bpf_xmit+0x120/0x178 [ 940.640972] lwtunnel_xmit+0xd0/0x210 [ 940.644600] ip_finish_output2+0x488/0xa80 [ 940.648654] __ip_finish_output+0x204/0x318 [ 940.652795] ip_finish_output+0x38/0xd0 [ 940.656592] ip_output+0x108/0x2f8 [ 940.659959] ip_local_out+0x5c/0x98 [ 940.663411] ip_send_skb+0x2c/0xb8 [ 940.666778] ip_push_pending_frames+0x44/0x50 [ 940.671093] raw_sendmsg+0xa7c/0xe20 [ 940.674633] inet_sendmsg+0x4c/0x238 [ 940.678173] sock_sendmsg+0x34/0x50 [ 940.681627] __sys_sendto+0x120/0x150 [ 940.685252] __arm64_sys_sendto+0x30/0x40 [ 940.689223] el0_svc_common.constprop.0+0x7c/0x180 [ 940.693967] el0_svc_handler+0x34/0x90 [ 940.697678] el0_svc+0x8/0xc [ 940.700531] Code: b9001020 f9403fa0 d538d082 f9402400 (f8626813) [ 940.706579] ---[ end trace 8a07ef53f23b6533 ]--- [ 940.711150] Kernel panic - not syncing: Fatal exception in interrupt [ 940.717449] SMP: stopping secondary CPUs [ 940.721536] Kernel Offset: disabled [ 940.724989] CPU features: 0x0002,24006004 [ 940.728957] Memory Limit: none [ 940.731998] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- [1] https://lkft.validation.linaro.org/scheduler/job/760547#L23242 Best regards Naresh Kamboju

6 years

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BUG: kernel NULL pointer dereference, address: 00000000: memcpy+0x1d/0x30

by Naresh Kamboju

While running selftest bpf: test_maps the kernel BUG found on i386 kernel running on x86_64 machine Linux version 5.2.0-rc3-next-20190604 Full test log can be found in the below link [1] # helper_fill_hashmap(261)FAILfailed to create hashmap err Cannot allocate memory, flags 0x0 to: create_hashmap # # Fork 1024 tasks to 'test_update_delete' 1024: tasks_to # # Fork 1024 tasks to 'test_update_delete' 1024: tasks_to # # Fork 100 tasks to 'test_hashmap' 100: tasks_to # # Fork 100 tasks to 'test_hashmap_percpu' 100: tasks_to # # Fork 100 tasks to 'test_hashmap_sizes' [ 93.249753] BUG: kernel NULL pointer dereference, address: 00000000 [ 93.256586] #PF: supervisor read access in kernel mode [ 93.261714] #PF: error_code(0x0000) - not-present page [ 93.266846] *pde = 00000000 [ 93.269722] Oops: 0000 [#1] SMP [ 93.272859] CPU: 0 PID: 4354 Comm: test_sockmap Not tainted 5.2.0-rc3-next-20190604 #1 [ 93.280763] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 93.288235] EIP: memcpy+0x1d/0x30 [ 93.291547] Code: 59 58 eb 85 90 90 90 90 90 90 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c7 53 89 d6 89 cb c1 e9 02 f3 a5 89 d9 83 e1 03 74 02 <f3> a4 5b 5e 5f 5d c3 8d b6 00 00 00 00 8d bf 00 00 00 00 3e 8d 74 [ 93.310291] EAX: e2ca9000 EBX: 00000001 ECX: 00000001 EDX: 00000000 [ 93.316548] ESI: 00000000 EDI: e2ca9000 EBP: e3d8799c ESP: e3d87990 [ 93.322806] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010202 [ 93.329582] CR0: 80050033 CR2: 00000000 CR3: 20d21000 CR4: 003406d0 [ 93.335841] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 93.342097] DR6: fffe0ff0 DR7: 00000400 [ 93.345929] Call Trace: [ 93.348391] bpf_msg_push_data+0x635/0x660 [ 93.352492] ___bpf_prog_run+0xa0d/0x15a0 [ 93.356529] ? __lock_acquire+0x1fe/0x1360 [ 93.360626] __bpf_prog_run32+0x4b/0x70 [ 93.364461] ? sk_psock_msg_verdict+0x5/0x290 [ 93.368842] sk_psock_msg_verdict+0xad/0x290 [ 93.373105] ? sk_psock_msg_verdict+0xad/0x290 [ 93.377543] ? lockdep_hardirqs_on+0xec/0x1a0 [ 93.381896] ? __local_bh_enable_ip+0x78/0xf0 [ 93.386255] tcp_bpf_send_verdict+0x29c/0x3b0 [ 93.390615] tcp_bpf_sendpage+0x233/0x3d0 [ 93.394629] ? __lock_acquire+0x1fe/0x1360 [ 93.398754] ? __lock_acquire+0x1fe/0x1360 [ 93.402850] ? lock_release+0x8b/0x280 [ 93.406593] ? find_get_entry+0x136/0x300 [ 93.410599] ? touch_atime+0x34/0xd0 [ 93.414177] ? copy_page_to_iter+0x245/0x400 [ 93.418441] ? lockdep_hardirqs_on+0xec/0x1a0 [ 93.422793] ? tcp_bpf_send_verdict+0x3b0/0x3b0 [ 93.427325] inet_sendpage+0x53/0x1f0 [ 93.430981] ? inet_recvmsg+0x1e0/0x1e0 [ 93.434812] ? kernel_sendpage+0x40/0x40 [ 93.438728] kernel_sendpage+0x1e/0x40 [ 93.442474] sock_sendpage+0x24/0x30 [ 93.446054] pipe_to_sendpage+0x59/0xa0 [ 93.449894] ? direct_splice_actor+0x40/0x40 [ 93.454166] __splice_from_pipe+0xde/0x1c0 [ 93.458264] ? direct_splice_actor+0x40/0x40 [ 93.462535] ? direct_splice_actor+0x40/0x40 [ 93.466801] splice_from_pipe+0x59/0x80 [ 93.470641] ? splice_from_pipe+0x80/0x80 [ 93.474652] ? generic_splice_sendpage+0x20/0x20 [ 93.479262] generic_splice_sendpage+0x18/0x20 [ 93.483701] ? direct_splice_actor+0x40/0x40 [ 93.487971] direct_splice_actor+0x2d/0x40 [ 93.492065] splice_direct_to_actor+0x127/0x240 [ 93.496597] ? generic_pipe_buf_nosteal+0x10/0x10 [ 93.501302] do_splice_direct+0x7e/0xc0 [ 93.505134] do_sendfile+0x20d/0x3e0 [ 93.508739] sys_sendfile+0xac/0xd0 [ 93.512232] ? lock_release+0x8b/0x280 [ 93.515984] do_fast_syscall_32+0x8e/0x320 [ 93.520084] entry_SYSENTER_32+0x70/0xc8 [ 93.524009] EIP: 0xb7f9d7a1 [ 93.526807] Code: 8b 98 60 cd ff ff 85 d2 89 c8 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 1c 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76 [ 93.545542] EAX: ffffffda EBX: 0000001a ECX: 0000001e EDX: 00000000 [ 93.551799] ESI: 00000001 EDI: 0000001a EBP: 00000001 ESP: bfa67a64 [ 93.558057] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000206 [ 93.564836] Modules linked in: tun algif_hash af_alg x86_pkg_temp_thermal fuse [ 93.572082] CR2: 0000000000000000 [ 93.575411] ---[ end trace c106584042e12a8d ]--- [ 93.580046] EIP: memcpy+0x1d/0x30 [ 93.583355] Code: 59 58 eb 85 90 90 90 90 90 90 90 90 90 3e 8d 74 26 00 55 89 e5 57 56 89 c7 53 89 d6 89 cb c1 e9 02 f3 a5 89 d9 83 e1 03 74 02 <f3> a4 5b 5e 5f 5d c3 8d b6 00 00 00 00 8d bf 00 00 00 00 3e 8d 74 [ 93.602092] EAX: e2ca9000 EBX: 00000001 ECX: 00000001 EDX: 00000000 [ 93.608349] ESI: 00000000 EDI: e2ca9000 EBP: e3d8799c ESP: d967e49c [ 93.614607] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010202 [ 93.621408] CR0: 80050033 CR2: 00000000 CR3: 20d21000 CR4: 003406d0 [ 93.627694] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 93.633951] DR6: fffe0ff0 DR7: 00000400 [ 93.637783] BUG: sleeping function called from invalid context at /usr/src/kernel/include/linux/percpu-rwsem.h:34 [ 93.648035] in_atomic(): 1, irqs_disabled(): 1, pid: 4354, name: test_sockmap [ 93.655156] INFO: lockdep is turned off. [ 93.659074] irq event stamp: 1538 [ 93.662408] hardirqs last enabled at (1537): [<d902cadf>] _raw_spin_unlock_irqrestore+0x2f/0x50 [ 93.671200] hardirqs last disabled at (1538): [<d840182c>] trace_hardirqs_off_thunk+0xc/0x10 [ 93.679624] softirqs last enabled at (1532): [<d8d1b849>] lock_sock_nested+0x39/0x90 [ 93.687465] softirqs last disabled at (1530): [<d8d1b83f>] lock_sock_nested+0x2f/0x90 [ 93.695284] CPU: 0 PID: 4354 Comm: test_sockmap Tainted: G D 5.2.0-rc3-next-20190604 #1 [ 93.704573] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.0b 07/27/2017 [ 93.712043] Call Trace: [ 93.714490] dump_stack+0x66/0x96 [ 93.717800] ___might_sleep+0x13e/0x230 [ 93.721629] __might_sleep+0x33/0x80 [ 93.725200] exit_signals+0x2a/0x200 [ 93.728771] do_exit+0x8e/0xbb0 [ 93.731910] ? do_fast_syscall_32+0x8e/0x320 [ 93.736182] rewind_stack_do_exit+0x11/0x13 [ 93.740356] EIP: 0xb7f9d7a1 [ 93.743150] Code: 8b 98 60 cd ff ff 85 d2 89 c8 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 1c 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76 [ 93.761887] EAX: ffffffda EBX: 0000001a ECX: 0000001e EDX: 00000000 [ 93.768142] ESI: 00000001 EDI: 0000001a EBP: 00000001 ESP: bfa67a64 [ 93.774406] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000206 100: tasks_to [ 93.781266] note: test_sockmap[4354] exited with preempt_count 2 # # Fork 100 tasks to 'test_hashmap_walk' 100: tasks_to # # helper_fill_hashmap(261)FAILfailed to create hashmap err Cannot allocate memory, flags 0x0 [1] https://lkft.validation.linaro.org/scheduler/job/760391#L13640 Best regards Naresh Kamboju

6 years

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bpf: test_btf : kernel Oops: 207 : PC is at memcpy+0xc0/0x330

by Naresh Kamboju

while running kernel selftest bpf: test_btf the following kernel oops detected on beaglebone x15 board. Linux version 5.2.0-rc3-next-20190604 Full test log link can be found below [1] bpf: test_btf_ # # BTF GET_INFO test[3] (Large bpf_btf_info) OK GET_INFO: test[3]_(Large # # BTF GET_INFO test[4] (BTF ID) OK GET_INFO: test[4]_(BTF # [ 341.144885] 8<--- cut here --- [ 341.148164] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 341.156443] pgd = b0902156 [ 341.159294] [00000000] *pgd=9655e003, *pmd=ff918003 [ 341.164229] Internal error: Oops: 207 [#1] SMP ARM [ 341.169052] Modules linked in: tun sha1_generic sha1_arm_neon sha1_arm algif_hash af_alg snd_soc_simple_card snd_soc_simple_card_utils snd_soc_core ac97_bus snd_pcm_dmaengine snd_pcm snd_timer snd soundcore fuse [ 341.187962] CPU: 0 PID: 6773 Comm: test_sockmap Not tainted 5.2.0-rc3-next-20190604 #1 [ 341.195923] Hardware name: Generic DRA74X (Flattened Device Tree) [ 341.202058] PC is at memcpy+0xc0/0x330 [ 341.205836] LR is at bpf_msg_push_data+0x70c/0x728 [ 341.210654] pc : [<c12da820>] lr : [<c10ea4a4>] psr: 800b0013 [ 341.216957] sp : e99ad6cc ip : 00000002 fp : e99ad83c [ 341.222212] r10: d1bdc000 r9 : 00000001 r8 : 00000000 [ 341.227467] r7 : cd1de000 r6 : 00000000 r5 : d1bdc000 r4 : 00000000 [ 341.234032] r3 : 00000000 r2 : 80000000 r1 : 00000000 r0 : cd1de000 [ 341.240597] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 341.247771] Control: 30c5387d Table: 91b19880 DAC: fffffffd [ 341.253553] Process test_sockmap (pid: 6773, stack limit = 0x3ad4028c) [ 341.260118] Stack: (0xe99ad6cc to 0xe99ae000) [ 341.264502] d6c0: cd1de000 00000000 c10ea4a4 00000000 00000000 [ 341.272725] d6e0: 00000000 00000000 00000000 00000000 00000000 00000000 ea2759a0 00000001 [ 341.280948] d700: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.289171] d720: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.297394] d740: 00000000 00000000 00000000 00000000 00000000 00000000 e99ad78c d03f0580 [ 341.305615] d760: 00000004 d03f0000 00000007 000003a9 00000000 00000000 00000000 00000000 [ 341.313836] d780: 00000000 00000000 00000000 00000000 d03f0000 c0581f6c 00000060 c1e09fd0 [ 341.322060] d7a0: e99ad85c e99ad7b0 c04c1d1c 00000000 c06c3638 c1dc19b8 e99ad7ec d03f0540 [ 341.330283] d7c0: 00000002 d03f0000 00000007 000003a9 00000001 d03f0560 d03f0000 e3444ce4 [ 341.338506] d7e0: 00000060 c1e09fd0 e99ad8a4 e99ad7f8 cbc66e00 e99ad8a8 c1419868 c059b69c [ 341.346730] d800: 00000000 00000000 e99ad824 e99ad818 c04e3b7c f006b240 e99ad8b8 c1419868 [ 341.354954] d820: c10e9d98 00000000 00000000 c0581ddc e99ad894 e99ad840 c0581f6c c10e9da4 [ 341.363175] d840: 00000000 00000000 00000000 00000000 00000000 00000000 f5388145 290412b8 [ 341.371399] d860: c2432908 00000000 f08d7937 c1e08488 f006b028 00000011 c11cd828 f006b000 [ 341.379620] d880: e99ad9e4 c1fc9e37 e99ad934 e99ad898 c0584910 c0581e48 00000000 00000000 [ 341.387841] d8a0: 00000005 00000004 00000003 00000002 00000001 00000000 cbc66ee8 00000000 [ 341.396063] d8c0: d1bdc000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.404286] d8e0: 00000000 00000000 d1bdc000 00000000 cbc66ee0 00000000 00000007 00000006 [ 341.412509] d900: 00000010 c1fc9e37 e99ad8b8 00000000 cf380840 c10fdef4 c11cd828 9fdbe7c7 [ 341.420732] d920: d1bdc000 d1bdc000 e99ad984 e99ad938 c10fdf18 c05848d0 00000000 00000000 [ 341.428954] d940: c10fde14 c0459978 e99ad97c e99ad958 c056165c e7bdd400 000001ff d1bdc000 [ 341.437178] d960: e7bdd400 00000011 cf380840 00000000 e99ad9e4 c1fc9e37 e99ad9cc e99ad988 [ 341.445407] d980: c11cd828 c10fde20 c11cda3c 00000000 00000000 e99ad9a0 00000000 00000000 [ 341.453631] d9a0: 00000001 e7bdd400 cf380840 eb6d1030 c1e08488 00000000 00000003 c1fc9e37 [ 341.461855] d9c0: e99adcac e99ad9d0 c11cdb60 c11cd518 00000000 00000000 c11cd90c e8577024 [ 341.470078] d9e0: 00000020 00000001 00000000 00000000 00000001 00000001 00000000 00000001 [ 341.478300] da00: 00000000 00000000 00000000 00000000 eb6d1030 00000000 00000001 00000000 [ 341.486522] da20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.494742] da40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.502965] da60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.511184] da80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 341.519406] daa0: 00000000 00000000 00000000 00000000 00000000 00000087 00000001 d03f0500 [ 341.527628] dac0: d03f0000 c1e47f04 00000000 c1e09fd0 e99adb8c e99adae0 c04c1d1c c04c10d0 [ 341.535850] dae0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000078 [ 341.544074] db00: d03f04f0 00000087 00000000 00000000 c2432908 c2638640 00000087 d03f0500 [ 341.552296] db20: c1e08488 c2418b30 406293ec 295bca2f 00000000 00000000 00000000 00000000 [ 341.560517] db40: 00000000 00000000 d03f04f0 00000078 e99adb84 e99adb60 c040e488 00000087 [ 341.568741] db60: 00000001 d03f0500 d03f0000 c1e47f04 00000000 c1e09fd0 e99adc34 e99adb88 [ 341.576961] db80: c04c1d1c c04c10d0 ffffe000 c1fcaf30 c069cddc c1e47f04 e99adbbc e99adba8 [ 341.585182] dba0: c04c19e0 c04c1864 d03f04f0 00000087 00000000 00000000 c2432908 c2638640 [ 341.593405] dbc0: 00000087 d03f0500 c1e08488 c2418b30 406293ec 295bca2f e99adc24 e99adbe8 [ 341.601628] dbe0: c04fe13c c05615d4 00000001 00000000 c069cddc e99adc54 e99adc2c e99adc08 [ 341.609851] dc00: c040e488 c040ce94 c1e08488 00000000 ffffe000 c1fcaf30 c069cddc c1e47f04 [ 341.618073] dc20: e99adc64 e99adc30 d03f0000 c04fe13c ffffe000 c1fcaf30 c069cddc c1e47f04 [ 341.626294] dc40: e99adc64 e99adc50 c04c19e0 c04c1864 c1dc1000 c04fe13c e99adc8c e99adc68 [ 341.634517] dc60: c056165c c04c18d8 c1e47e40 400b0013 00000001 e99adce0 c069cddc 9fdbe7c7 [ 341.642738] dc80: e99adccc cf380840 c11cd90c e776d400 eb6d1030 00000010 00000001 c1938660 [ 341.650959] dca0: e99adcf4 e99adcb0 c119c98c c11cd918 00000000 e3444a98 e99add14 e99adcd0 [ 341.659180] dcc0: c069ce08 c069cd10 5cf61726 c119c908 c10933a0 00000000 00000000 c06b7624 [ 341.667403] dce0: 00000001 c1938660 e99add14 e99adcf8 c1093390 c119c914 00000000 e3444a98 [ 341.675624] dd00: e7cd5110 c1e08488 e99add2c e99add18 c10933d8 c1093368 00000000 0000026d [ 341.683846] dd20: e99add64 e99add30 c06b7694 c10933ac e99add38 00000000 00000000 00000000 [ 341.692067] dd40: c1e08488 9fdbe7c7 e7bdc800 e99adda0 d3b2fcc0 00000018 e99add9c e99add68 [ 341.700289] dd60: c06b8a04 c06b7630 e99ade60 00000000 00000000 c1e08488 d3b2fcc0 c06b7624 [ 341.708510] dd80: e68598c0 00000000 00000001 e99adf20 e99addfc e99adda0 c06b9214 c06b897c [ 341.716731] dda0: 00000001 00000001 00000000 e68598c0 00000000 00000000 00000000 00000000 [ 341.724953] ddc0: 00000000 00000000 00000000 9fdbe7c7 00000000 c06b9240 e99adea0 00000001 [ 341.733176] dde0: 00000000 00000010 00000000 00000001 e99ade14 e99ade00 c06b9270 c06b91a4 [ 341.741398] de00: 00000000 c06b7624 e99ade34 e99ade18 c06b761c c06b924c 00000000 e99adea0 [ 341.749621] de20: 00000001 d3b2fcc0 e99ade9c e99ade38 c06b7ff0 c06b75dc 00000000 c067a2dc [ 341.757842] de40: 00000001 c1e08488 00000000 c06b75d0 00000000 e9949a00 00000010 00000000 [ 341.766065] de60: 00000011 00000000 e99adf1c 9fdbe7c7 00020000 c1e08488 e99adf18 00000010 [ 341.774285] de80: 00000000 e9949a00 e99adf20 e68598c0 e99adef4 e99adea0 c06b8238 c06b7edc [ 341.782507] dea0: 00000001 00000001 00000000 e68598c0 00000010 00000000 e99adf20 00000000 [ 341.790729] dec0: 00000000 00000000 d03f0000 9fdbe7c7 c1e08488 c1e08488 e9949a00 fffff000 [ 341.798952] dee0: 00000fff 00000001 e99adf5c e99adef8 c067ac74 c06b8198 00000001 00000000 [ 341.807174] df00: e776d420 00000000 00000000 00000000 e68598c0 e9949a00 00000010 00000000 [ 341.815397] df20: 00000000 00000000 c1e08488 9fdbe7c7 00000001 c1e08488 00000001 00000000 [ 341.823618] df40: 00000000 c04011c4 0000001e 00000001 e99adfa4 e99adf60 c067c2a4 c067aaa4 [ 341.831841] df60: fffff000 00000fff e99adfac e99adf78 c1dc1000 9fdbe7c7 e99adfac bef7ca44 [ 341.840063] df80: 00000001 00000200 000000bb c04011c4 e99ac000 000000bb 00000000 e99adfa8 [ 341.848285] dfa0: c0401000 c067c1b8 bef7ca44 00000001 0000001a 0000001e 00000000 00000001 [ 341.856508] dfc0: bef7ca44 00000001 00000200 000000bb 00000001 0000001e 0000001a 00000010 [ 341.864729] dfe0: 00045034 bef7c884 000137c0 b6e76d7c 200b0010 0000001a 00000000 00000000 [ 341.872948] Backtrace: [ 341.875425] [<c10e9d98>] (bpf_msg_push_data) from [<c0581f6c>] (___bpf_prog_run+0x130/0x1bbc) [ 341.883999] r10:c0581ddc r9:00000000 r8:00000000 r7:c10e9d98 r6:c1419868 r5:e99ad8b8 [ 341.891869] r4:f006b240 [ 341.894426] [<c0581e3c>] (___bpf_prog_run) from [<c0584910>] (__bpf_prog_run32+0x4c/0x68) [ 341.902649] r10:c1fc9e37 r9:e99ad9e4 r8:f006b000 r7:c11cd828 r6:00000011 r5:f006b028 [ 341.910520] r4:c1e08488 [ 341.913079] [<c05848c4>] (__bpf_prog_run32) from [<c10fdf18>] (sk_psock_msg_verdict+0x104/0x354) [ 341.921909] r4:d1bdc000 [ 341.924470] [<c10fde14>] (sk_psock_msg_verdict) from [<c11cd828>] (tcp_bpf_send_verdict+0x31c/0x400) [ 341.933654] r10:c1fc9e37 r9:e99ad9e4 r8:00000000 r7:cf380840 r6:00000011 r5:e7bdd400 [ 341.941524] r4:d1bdc000 [ 341.944083] [<c11cd50c>] (tcp_bpf_send_verdict) from [<c11cdb60>] (tcp_bpf_sendpage+0x254/0x3c4) [ 341.952914] r10:c1fc9e37 r9:00000003 r8:00000000 r7:c1e08488 r6:eb6d1030 r5:cf380840 [ 341.960784] r4:e7bdd400 [ 341.963343] [<c11cd90c>] (tcp_bpf_sendpage) from [<c119c98c>] (inet_sendpage+0x84/0x294) [ 341.971480] r10:c1938660 r9:00000001 r8:00000010 r7:eb6d1030 r6:e776d400 r5:c11cd90c [ 341.979350] r4:cf380840 [ 341.981906] [<c119c908>] (inet_sendpage) from [<c1093390>] (kernel_sendpage+0x34/0x44) [ 341.989868] r10:c1938660 r9:00000001 r8:c06b7624 r7:00000000 r6:00000000 r5:c10933a0 [ 341.997738] r4:c119c908 [ 342.000290] [<c109335c>] (kernel_sendpage) from [<c10933d8>] (sock_sendpage+0x38/0x40) [ 342.008248] r4:c1e08488 [ 342.010805] [<c10933a0>] (sock_sendpage) from [<c06b7694>] (pipe_to_sendpage+0x70/0xa4) [ 342.018856] [<c06b7624>] (pipe_to_sendpage) from [<c06b8a04>] (__splice_from_pipe+0x94/0x1cc) [ 342.027424] r7:00000018 r6:d3b2fcc0 r5:e99adda0 r4:e7bdc800 [ 342.033122] [<c06b8970>] (__splice_from_pipe) from [<c06b9214>] (splice_from_pipe+0x7c/0xa8) [ 342.041605] r10:e99adf20 r9:00000001 r8:00000000 r7:e68598c0 r6:c06b7624 r5:d3b2fcc0 [ 342.049475] r4:c1e08488 [ 342.052032] [<c06b9198>] (splice_from_pipe) from [<c06b9270>] (generic_splice_sendpage+0x30/0x38) [ 342.060953] r10:00000001 r9:00000000 r8:00000010 r7:00000000 r6:00000001 r5:e99adea0 [ 342.068822] r4:c06b9240 [ 342.071377] [<c06b9240>] (generic_splice_sendpage) from [<c06b761c>] (direct_splice_actor+0x4c/0x54) [ 342.080562] [<c06b75d0>] (direct_splice_actor) from [<c06b7ff0>] (splice_direct_to_actor+0x120/0x2bc) [ 342.089827] r4:d3b2fcc0 [ 342.092383] [<c06b7ed0>] (splice_direct_to_actor) from [<c06b8238>] (do_splice_direct+0xac/0xe4) [ 342.101218] r10:e68598c0 r9:e99adf20 r8:e9949a00 r7:00000000 r6:00000010 r5:e99adf18 [ 342.109088] r4:c1e08488 [ 342.111645] [<c06b818c>] (do_splice_direct) from [<c067ac74>] (do_sendfile+0x1dc/0x420) [ 342.119693] r8:00000001 r7:00000fff r6:fffff000 r5:e9949a00 r4:c1e08488 [ 342.126436] [<c067aa98>] (do_sendfile) from [<c067c2a4>] (sys_sendfile+0xf8/0x11c) [ 342.134048] r10:00000001 r9:0000001e r8:c04011c4 r7:00000000 r6:00000000 r5:00000001 [ 342.141917] r4:c1e08488 [ 342.144475] [<c067c1ac>] (sys_sendfile) from [<c0401000>] (ret_fast_syscall+0x0/0x28) [ 342.152346] Exception stack(0xe99adfa8 to 0xe99adff0) [ 342.157428] dfa0: bef7ca44 00000001 0000001a 0000001e 00000000 00000001 [ 342.165650] dfc0: bef7ca44 00000001 00000200 000000bb 00000001 0000001e 0000001a 00000010 [ 342.173870] dfe0: 00045034 bef7c884 000137c0 b6e76d7c [ 342.178951] r10:000000bb r9:e99ac000 r8:c04011c4 r7:000000bb r6:00000200 r5:00000001 [ 342.186822] r4:bef7ca44 [ 342.189377] Code: e4808004 e480e004 e8bd01e0 e1b02f82 (14d13001) [ 342.195755] ---[ end trace d2353d98cf59813b ]--- [1] https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20190604/testru…

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[PATCH v2 18/22] docs: move protection-keys.rst to the core-api book

by Mauro Carvalho Chehab

This document is used by multiple architectures: $ echo $(git grep -l pkey_mprotect arch|cut -d'/' -f 2|sort|uniq) alpha arm arm64 ia64 m68k microblaze mips parisc powerpc s390 sh sparc x86 xtensa So, let's move it to the core book and adjust the links to it accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org> --- Documentation/core-api/index.rst | 1 + Documentation/{x86 => core-api}/protection-keys.rst | 0 Documentation/x86/index.rst | 1 - arch/powerpc/Kconfig | 2 +- arch/x86/Kconfig | 2 +- tools/testing/selftests/x86/protection_keys.c | 2 +- 6 files changed, 4 insertions(+), 4 deletions(-) rename Documentation/{x86 => core-api}/protection-keys.rst (100%) diff --git a/Documentation/core-api/index.rst b/Documentation/core-api/index.rst index ee1bb8983a88..2466a4c51031 100644 --- a/Documentation/core-api/index.rst +++ b/Documentation/core-api/index.rst @@ -34,6 +34,7 @@ Core utilities timekeeping boot-time-mm memory-hotplug + protection-keys Interfaces for kernel debugging diff --git a/Documentation/x86/protection-keys.rst b/Documentation/core-api/protection-keys.rst similarity index 100% rename from Documentation/x86/protection-keys.rst rename to Documentation/core-api/protection-keys.rst diff --git a/Documentation/x86/index.rst b/Documentation/x86/index.rst index ae36fc5fc649..f2de1b2d3ac7 100644 --- a/Documentation/x86/index.rst +++ b/Documentation/x86/index.rst @@ -19,7 +19,6 @@ x86-specific Documentation tlb mtrr pat - protection-keys intel_mpx amd-memory-encryption pti diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 1120ff8ac715..e437aa3e78b4 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -898,7 +898,7 @@ config PPC_MEM_KEYS page-based protections, but without requiring modification of the page tables when an application changes protection domains. - For details, see Documentation/vm/protection-keys.rst + For details, see Documentation/core-api/protection-keys.rst If unsure, say y. diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 23de3b9da480..61244bdb886f 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1911,7 +1911,7 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS page-based protections, but without requiring modification of the page tables when an application changes protection domains. - For details, see Documentation/x86/protection-keys.txt + For details, see Documentation/core-api/protection-keys.rst If unsure, say y. diff --git a/tools/testing/selftests/x86/protection_keys.c b/tools/testing/selftests/x86/protection_keys.c index 5d546dcdbc80..480995bceefa 100644 --- a/tools/testing/selftests/x86/protection_keys.c +++ b/tools/testing/selftests/x86/protection_keys.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Tests x86 Memory Protection Keys (see Documentation/x86/protection-keys.txt) + * Tests x86 Memory Protection Keys (see Documentation/core-api/protection-keys.rst) * * There are examples in here of: * * how to set protection keys on memory -- 2.21.0

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